US6389696B1 - Plate heat exchanger and method of making same - Google Patents
Plate heat exchanger and method of making same Download PDFInfo
- Publication number
- US6389696B1 US6389696B1 US09/679,527 US67952700A US6389696B1 US 6389696 B1 US6389696 B1 US 6389696B1 US 67952700 A US67952700 A US 67952700A US 6389696 B1 US6389696 B1 US 6389696B1
- Authority
- US
- United States
- Prior art keywords
- heat exchanger
- plate heat
- patterning
- sided
- flow channels
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F3/00—Plate-like or laminated elements; Assemblies of plate-like or laminated elements
- F28F3/02—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations
- F28F3/04—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element
- F28F3/042—Elements or assemblies thereof with means for increasing heat-transfer area, e.g. with fins, with recesses, with corrugations the means being integral with the element in the form of local deformations of the element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D9/0031—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other
- F28D9/0043—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another
- F28D9/005—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits for one heat-exchange medium being formed by paired plates touching each other the plates having openings therein for circulation of at least one heat-exchange medium from one conduit to another the plates having openings therein for both heat-exchange media
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0061—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for phase-change applications
- F28D2021/0064—Vaporizers, e.g. evaporators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4935—Heat exchanger or boiler making
- Y10T29/49366—Sheet joined to sheet
Definitions
- the present invention relates to a plate heat exchanger, comprising heat transfer plates, which exhibit a patterning stacked one above the other, and between which primary sided flow channels are formed for a first heat exchanger medium to the evaporated, and secondary sided channels are formed for a second heat exchanger heat carrier medium, wherein at least some of the primary sided and secondary sided flow channels are formed between two adjacent heat transfer plates, with patterning meshing at least partially, while maintaining a minimum spacing.
- a plate evaporator for evaporating fluids with a number of stacked heat transfer plates is disclosed in the WO 91/16589.
- the corrugated sheet metal-like configuration of the heat transfer plates provides here between the individual plates the flow chambers for the heat exchanger mediums.
- the sweep angles of the individual flow channels along the length of the plate evaporator can be varied.
- an object of the invention is to provide a plate heat exchanger, with which efficient evaporation can be carried out, while avoiding, in particular, the Leidenfrost phenomenon.
- a plate heat exchanger comprising heat transfer plates which exhibit a patterning stacked one above the other, and between which primary sided flow channels are formed for a first heat exchanger medium to be evaporated, and secondary sided channels are formed for a second heat exchanger heat carrier medium, wherein at least some of the primary sided and secondary sided flow channels are formed between two adjacent heat transfer plates, with patterning meshing at least partially, while maintaining a minimum spacing.
- the heat transfer plates are designed as plates with a fishbone-like patterning.
- two patternings which run essentially in the same direction, are stacked one above the other; and to form the secondary sided flow channels, patternings, running in the opposite direction, are stacked one above the other for the purpose of producing cross channel structures.
- Both sides of the plates that are shaped in a fishbone-like patterning exhibit a patterning that can be used according to the invention.
- two heat transfer plates can be moved very close to each other in order to form very narrow flow channels. Elevations of the one pattern mesh with the depressions of the other pattern while retaining a minimum or desired spacing.
- Expediently spacing elements are provided between the heat transfer plates for the purpose of adjusting the height of the flow channels. Especially in the case of heat transfer plates, whose patterning, running in the same direction, is stacked one above the other, such spacing elements can guarantee the desired and necessary minimum distance in order to provide an adequate channel diameter. With such spacing elements both the primary and the secondary sided flow channels can be optimally adapted to the concrete features. Moreover, the spacing elements have proven to be advantageous, because, as the mediums flow through the channel, they generate turbulence, thus further improving the heat exchanger properties of the plate heat exchanger.
- Another preferred embodiment of the inventive plate heat exchanger provides an inlet channel, which extends through the heat transfer plates and communicates with the primary sided or secondary sided flow channels, for the purpose of introducing the heat exchanger medium into the plate heat exchanger.
- the embodiment also provides two outlet channels, which extend through the heat transfer plates and communicate with the primary sided or secondary sided flow channels, for the purpose of dispensing the heat exchanger medium.
- a sweep angle of the patterning of the heat transfer plates is varied in the main direction of flow relative to the center axis of the plate heat exchanger. For example, decreasing the sweep angle in the flow direction of the heat carrier minimizes a pressure loss of the heat carrier. The same applies to a decreasing sweep angle in the flow direction of the medium to be evaporated.
- the primary sided and/or secondary sided flow channels exhibit a coating, with which the efficiency of the heat exchanger is improved by increasing the heat transfer area, when the coating exhibits a defined roughness.
- the coating of the primary sided and/or secondary sided flow channels is doped with a catalyst material, with which it is possible to generate a catalytic reaction in the heat exchanger.
- FIG. 1 is a schematic drawing of a top view of a heat transfer plate, which forms a part of the plate heat exchanger of a preferred embodiment of the invention
- FIG. 2 is a schematic drawing of a side sectional view of a preferred embodiment of an inventive plate heat exchanger along the line A—A of FIG. 1;
- FIG. 3 is a schematic drawing depicting the meshing of the patterning of two stacked heat transfer plates.
- FIG. 1 is a schematic top view of a heat transfer plate.
- a fishbone-like patterning 10 for example, embossed into a sheet metal plate.
- the patterning 10 exhibits elevations and depressions. Even the rearside of the heat transfer plate 2 , which is not visible in the drawing of FIG. 1, exhibits a corresponding patterning.
- the heat transfer plate 2 is designed with a number of boreholes 4 , 5 , 6 , 7 . When a number of heat transfer plates 2 are stacked one above the other, these boreholes form inlet channels or outlet channels for the heat exchanger mediums, as described below. It is evident from FIG. 1 that two boreholes 4 , 7 are arranged on the center axis M of the heat transfer plate, whereas the other boreholes 5 or 7 are positioned symmetrically relative to this center axis M.
- FIG. 2 is a side sectional view of a preferred embodiment of a plate heat exchanger of the invention. It is evident that a number of heat transfer plates 2 are stacked one above the other. The heat transfer plates 2 are hereby arranged in a housing 20 , which exhibits a bottom part 20 a , an upper part 20 b and side walls 20 c .
- a housing 20 which exhibits a bottom part 20 a , an upper part 20 b and side walls 20 c .
- the stacked arrangement of the boreholes 4 produces an inlet channel 40 , over which a heat exchanger medium can be passed into secondary sided flow channels.
- the secondary sided flow channels in turn communicate with an outlet channel 50 , which is formed by the stacking arrangement of the boreholes 5 .
- a medium to be evaporated can be passed correspondingly over an inlet channel 70 (formed by stacking the boreholes 7 one above the other) into primary sided flow channels, which in turn communicate with an outlet channel 50 , which is produced by stacking the boreholes 5 one above the other.
- the primary and secondary sided flow channels do not communicate with each other. It must be noted that in the drawing of FIG. 2 two of the inlet channels 70 , introduced from opposite sides, are formed. It is also possible in the same manner to provide only one inlet channel 70 , which communicates with all of the primary sided flow channels. All channels exhibit cylindrical tubes, which are formed with corresponding openings in their side walls for the purpose of creating the respective desired connections with the flow channels.
- the invention provides that the primary and secondary sided flow channels are formed with different channel diameters or volumes.
- a primary sided channel structure through which in particular a heat exchanger medium is supposed to flow, two heat transfer plates, as depicted in FIG. 1, are stacked and fixed in position relative to one another in such a manner for this purpose that the respective fishbone-like patterning runs parallel to each other.
- the elevations of the one heat transfer plate project at least partially into the depressions of the second heat transfer plate, as depicted by the schematic drawing in FIG. 3 .
- the stacked patterning is marked here with the numerals 2 a , 2 b .
- the spacing elements 25 are also depicted schematically in the upper right region of the heat transfer plate 2 , shown in FIG. 1 . With this meshing patterning the heat transfer plates 2 a , 2 b can be arranged significantly closer together, as compared with a stacked fishbone-like patterning, which runs in the opposite direction or does not run parallel to each other.
- the secondary sided flow channels, through which the heat exchanger medium flows to be designed in such a manner that the fishbone-like patterning of the heat transfer plates is arranged alternatingly or cross-shaped one above the other for the purpose of forming cross channel structures.
- This can be achieved, for example, with the use of heat exchanger plates that exhibit a W- or M-shaped patterning.
- the primary sided or evaporator sided volume reduction realized by the invention, provides an improved dynamic over the conventional plate heat exchangers.
- the height of the primary sided or secondary sided channels can be adjusted with the spacing elements 25 .
- the heat transfer plates used according to the invention, are produced in a simple manner by embossing, for example, a sheet metal plate. It is possible to join the individual heat transfer plates, in particular also to guarantee the desired communication between the boreholes 4 , 5 , 6 , 7 and the primary and secondary sided flow channels, for example, by soldering or welding.
- the boreholes or channels 7 , 5 and 4 , 6 assigned to the respective heat exchanger mediums, are arranged in the shape of a Y relative to the center axis M of the heat transfer plate 2 .
- the medium to be evaporated flows, for example, through the borehole 7 into the plate heat exchanger and leaves the same through the boreholes 5 .
- the medium to be evaporated flows essentially in the shape of a Y through the plate heat exchanger, a feature that results in symmetrical temperature distribution inside the plate heat exchanger or the heat transfer plates.
- the thermal or mechanical stress of the heat transfer plates can be effectively reduced over the conventional solutions.
- a fuel gas sided adjustment of the pressure losses i.e. pressure loss of the heat exchanger medium, can be optimized by suitably designing the fishbone-like patterning of the secondary channels.
- the elevations or depressions of the respective flow channels can be rounded off, and not be peaked and angular, as shown schematically in FIG. 3 .
- the spacing elements 25 result in turbulence of the heat exchanger medium, flowing through the primary sided flow channels, thus further improving the heat exchange effect of the plate heat exchanger.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
Description
Claims (21)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19948222 | 1999-10-06 | ||
DE19948222A DE19948222C2 (en) | 1999-10-07 | 1999-10-07 | Plate heat exchanger |
Publications (1)
Publication Number | Publication Date |
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US6389696B1 true US6389696B1 (en) | 2002-05-21 |
Family
ID=7924754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/679,527 Expired - Fee Related US6389696B1 (en) | 1999-10-07 | 2000-10-06 | Plate heat exchanger and method of making same |
Country Status (3)
Country | Link |
---|---|
US (1) | US6389696B1 (en) |
EP (1) | EP1091185A3 (en) |
DE (1) | DE19948222C2 (en) |
Cited By (30)
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---|---|---|---|---|
US20020117294A1 (en) * | 2001-02-27 | 2002-08-29 | Methanol Casale S.A. | Method for carrying out chemical reactions in pseudo-isothermal conditions |
US20030094271A1 (en) * | 2000-07-21 | 2003-05-22 | Stephan Leuthner | Heat transfer device |
US6622519B1 (en) | 2002-08-15 | 2003-09-23 | Velocys, Inc. | Process for cooling a product in a heat exchanger employing microchannels for the flow of refrigerant and product |
EP1376042A2 (en) * | 2002-06-25 | 2004-01-02 | Zilmet S.p.A. | Plated heat exchanger with simplified production |
US20040034111A1 (en) * | 2002-08-15 | 2004-02-19 | Tonkovich Anna Lee | Process for conducting an equilibrium limited chemical reaction in a single stage process channel |
US20040031592A1 (en) * | 2002-08-15 | 2004-02-19 | Mathias James Allen | Multi-stream microchannel device |
US20040035558A1 (en) * | 2002-06-14 | 2004-02-26 | Todd John J. | Heat dissipation tower for circuit devices |
US6830098B1 (en) | 2002-06-14 | 2004-12-14 | Thermal Corp. | Heat pipe fin stack with extruded base |
US20050082158A1 (en) * | 2003-10-15 | 2005-04-21 | Wenger Todd M. | Fluid circuit heat transfer device for plural heat sources |
US20050176832A1 (en) * | 2004-02-11 | 2005-08-11 | Tonkovich Anna L. | Process for conducting an equilibrium limited chemical reaction using microchannel technology |
US7117930B2 (en) | 2002-06-14 | 2006-10-10 | Thermal Corp. | Heat pipe fin stack with extruded base |
US20060264073A1 (en) * | 2005-05-18 | 2006-11-23 | Chien-Yuh Yang | Planar heat dissipating device |
US20070107890A1 (en) * | 2003-08-01 | 2007-05-17 | Behr Gmbh & Co. Kg | Heat exchanger and method for the production thereof |
US20070131402A1 (en) * | 2003-11-10 | 2007-06-14 | Behr Gmbh & Co. Kg | Heat exchanger, especially charge-air/coolant cooler |
US20070261832A1 (en) * | 2006-05-09 | 2007-11-15 | Ware Be A | Dual two pass stacked plate heat exchanger |
US7307118B2 (en) | 2004-11-24 | 2007-12-11 | Molecular Imprints, Inc. | Composition to reduce adhesion between a conformable region and a mold |
US20080066895A1 (en) * | 2006-09-15 | 2008-03-20 | Behr Gmbh & Co. Kg | Stacked plate heat exchanger for use as charge air cooler |
US20080271878A1 (en) * | 2007-05-01 | 2008-11-06 | Liebert Corporation | Heat exchanger and method for use in precision cooling systems |
US20080307825A1 (en) * | 2005-04-15 | 2008-12-18 | Gunther Kolb | Micro-Evaporator |
US20090178793A1 (en) * | 2005-12-22 | 2009-07-16 | Alfa Laval Corporate Ab | Heat Transfer Plate For Plate Heat Exchanger With Even Load Distribution In Port Regions |
US20100065262A1 (en) * | 2008-09-18 | 2010-03-18 | Multistack Llc | Double inlet heat exchanger |
US7717165B2 (en) | 2003-11-10 | 2010-05-18 | Behr Gmbh & Co. Kg | Heat exchanger, especially charge-air/coolant radiator |
US20100319379A1 (en) * | 2009-06-23 | 2010-12-23 | Hussmann Corporation | Heat exchanger coil with wing tube profile for a refrigerated merchandiser |
US20110083833A1 (en) * | 2008-06-13 | 2011-04-14 | Alfa Laval Corporate Ab | Heat Exchanger |
US20140008047A1 (en) * | 2011-04-18 | 2014-01-09 | Mitsubishi Electric Corporation | Plate heat exchanger and heat pump apparatus |
US20150179287A1 (en) * | 2012-06-05 | 2015-06-25 | Société Technique pour I'Energie Atomique Technicatome | Plate heat exchanger for homogeneous fluid flows between ducts |
US20170131041A1 (en) * | 2014-06-18 | 2017-05-11 | Alfa Laval Corporate Ab | Heat transfer plate and plate heat exchanger comprising such a heat transfer plate |
JP2019530845A (en) * | 2016-10-07 | 2019-10-24 | アルファ−ラヴァル・コーポレート・アーベー | Heat exchange plate and heat exchanger |
US10989482B2 (en) | 2017-01-19 | 2021-04-27 | Alfa Laval Corporate Ab | Heat exchanging plate and heat exchanger |
US11466941B2 (en) * | 2019-04-09 | 2022-10-11 | Peter Dawson | Flat plate heat exchanger with adjustable spacers |
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DE20114850U1 (en) * | 2001-09-07 | 2003-01-16 | Behr Gmbh & Co, 70469 Stuttgart | Heat-exchange radiator has protruberances on sheets from hollow plate plane facing inwards |
DE10220532A1 (en) | 2001-05-11 | 2002-11-14 | Behr Gmbh & Co | Heat-exchange radiator has protruberances on sheets from hollow plate plane facing inwards |
DE102008029096B4 (en) * | 2008-06-20 | 2010-04-15 | Voith Patent Gmbh | Evaporator for a waste heat recovery system |
DE102008058210A1 (en) | 2008-11-19 | 2010-05-20 | Voith Patent Gmbh | Heat exchanger and method for its production |
IN2015DN04028A (en) * | 2012-10-16 | 2015-10-02 | Abell Foundation Inc | |
CN104344762B (en) * | 2013-07-25 | 2017-10-31 | 浙江三花汽车零部件有限公司 | The plate and its heat exchanger of heat exchanger |
CN110006276A (en) * | 2019-05-06 | 2019-07-12 | 南通文鼎换热设备科技有限公司 | A kind of raised variable cross-section fluid channel heat exchanger fin of plate heat exchanger |
DE102019008914A1 (en) * | 2019-12-20 | 2021-06-24 | Stiebel Eltron Gmbh & Co. Kg | Heat pump with optimized refrigerant circuit |
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Cited By (63)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030094271A1 (en) * | 2000-07-21 | 2003-05-22 | Stephan Leuthner | Heat transfer device |
US7040387B2 (en) * | 2000-07-21 | 2006-05-09 | Robert Bosch Gmbh | Heat transfer device |
US20020117294A1 (en) * | 2001-02-27 | 2002-08-29 | Methanol Casale S.A. | Method for carrying out chemical reactions in pseudo-isothermal conditions |
US7087205B2 (en) * | 2001-02-27 | 2006-08-08 | Methanol Casale S.A. | Method for carrying out chemical reactions in pseudo-isothermal conditions |
US6830098B1 (en) | 2002-06-14 | 2004-12-14 | Thermal Corp. | Heat pipe fin stack with extruded base |
US7117930B2 (en) | 2002-06-14 | 2006-10-10 | Thermal Corp. | Heat pipe fin stack with extruded base |
US20040035558A1 (en) * | 2002-06-14 | 2004-02-26 | Todd John J. | Heat dissipation tower for circuit devices |
EP1376042A3 (en) * | 2002-06-25 | 2006-06-07 | Zilmet S.p.A. | Plated heat exchanger with simplified production |
EP1376042A2 (en) * | 2002-06-25 | 2004-01-02 | Zilmet S.p.A. | Plated heat exchanger with simplified production |
US9441777B2 (en) | 2002-08-15 | 2016-09-13 | Velocys, Inc. | Multi-stream multi-channel process and apparatus |
US7780944B2 (en) | 2002-08-15 | 2010-08-24 | Velocys, Inc. | Multi-stream microchannel device |
US20060002848A1 (en) * | 2002-08-15 | 2006-01-05 | Tonkovich Anna L | Process for conducting an equilibrium limited chemical reaction in a single stage process channel |
US7255845B2 (en) | 2002-08-15 | 2007-08-14 | Velocys, Inc. | Process for conducting an equilibrium limited chemical reaction in a single stage process channel |
US7000427B2 (en) | 2002-08-15 | 2006-02-21 | Velocys, Inc. | Process for cooling a product in a heat exchanger employing microchannels |
US7014835B2 (en) | 2002-08-15 | 2006-03-21 | Velocys, Inc. | Multi-stream microchannel device |
US20040031592A1 (en) * | 2002-08-15 | 2004-02-19 | Mathias James Allen | Multi-stream microchannel device |
US6969505B2 (en) | 2002-08-15 | 2005-11-29 | Velocys, Inc. | Process for conducting an equilibrium limited chemical reaction in a single stage process channel |
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Also Published As
Publication number | Publication date |
---|---|
EP1091185A3 (en) | 2003-06-04 |
DE19948222C2 (en) | 2002-11-07 |
DE19948222A1 (en) | 2001-04-19 |
EP1091185A2 (en) | 2001-04-11 |
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